Switch database to READ ONLY mode

Greetings to all DBAs,

I need to replace an Oracle 8.1.6 production server (server A) with another one (server B).

Here's what I plan to do to achieve it :

1- switch server A database to READ ONLY mode to prevent any writing.
2- perform a full export of server A database
3- import the dump file into server B database
4- check server B is working fine and prepare it to replace server A
5- shutdown server A database and disconnect the machine
6- connect server B

Do i need to shutdown the server A database to re-open it in READ ONLY mode with "ALTER DATABASE OPEN READ ONLY" ? Same question if I would like to switch my database to READ WRITE.

Thanks a lot for any advices.

Scott Received on Sun Sep 16 2001 - 14:37:03 CDT